Leptogenesis in the exceptional supersymmetric standard model: flavour dependent lepton asymmetries
King, S.F, Luo, R, Miller, D.J. and Nevzorov, R. (2008) Leptogenesis in the exceptional supersymmetric standard model: flavour dependent lepton asymmetries. Journal of High Energy Physics, 2008, (12), 042. (doi:10.1088/1126-6708/2008/12/042).
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Description/Abstract
We calculate flavour dependent lepton asymmetries within the E6 inspired Supersymmetric Standard Model (E6SSM), which has an extra U(1)N symmetry. In this model, the right-handed neutrino doesn't participate in gauge interactions, allowing it to be used for both the see-saw mechanism and leptogenesis. Extra Higgs, leptons and leptoquarks predicted by the E6SSM contribute to the ordinary lepton CP asymmetries induced by the decays of the lightest right-handed neutrino (and sneutrino) and give rise to a set of extra decay asymmetries. We find that the CP asymmetries can be relatively large, even when the lightest right-handed neutrino is as light as 106 GeV.
| Item Type: | Article |
|---|---|
| ISSNs: | 1126-6708 (print) 1029-8479 (electronic) |
| Subjects: | Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy > Southampton High Energy Physics |
| Item ID: | 144087 |
| Date Deposited: | 26 Apr 2011 13:09 |
| Last Modified: | 01 Jun 2011 07:57 |
| Contributors: | King, S.F (Author) Luo, R (Author) Miller, D.J. (Author) Nevzorov, R. (Author) |
| Date: | 2008 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/144087 |
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